diff options
Diffstat (limited to 'fpu')
| -rw-r--r-- | fpu/softfloat-specialize.h | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h index b1101872af..9d68aae9d5 100644 --- a/fpu/softfloat-specialize.h +++ b/fpu/softfloat-specialize.h @@ -603,9 +603,15 @@ static commonNaNT floatx80ToCommonNaN( floatx80 a STATUS_PARAM) commonNaNT z; if ( floatx80_is_signaling_nan( a ) ) float_raise( float_flag_invalid STATUS_VAR); - z.sign = a.high>>15; - z.low = 0; - z.high = a.low; + if ( a.low >> 63 ) { + z.sign = a.high >> 15; + z.low = 0; + z.high = a.low << 1; + } else { + z.sign = floatx80_default_nan_high >> 15; + z.low = 0; + z.high = floatx80_default_nan_low << 1; + } return z; } @@ -624,11 +630,14 @@ static floatx80 commonNaNToFloatx80( commonNaNT a STATUS_PARAM) return z; } - if (a.high) - z.low = a.high; - else + if (a.high >> 1) { + z.low = LIT64( 0x8000000000000000 ) | a.high >> 1; + z.high = ( ( (uint16_t) a.sign )<<15 ) | 0x7FFF; + } else { z.low = floatx80_default_nan_low; - z.high = ( ( (uint16_t) a.sign )<<15 ) | 0x7FFF; + z.high = floatx80_default_nan_high; + } + return z; } |